The elementary stages of any subject (usually plural)(noun)
WordNet. Princeton University. 2010.
Use "abcs" in a sentence
"By reading consistently with him, he was able to learn to count, say his abcs, identify colours and shapes all by the age of 3, as has his little sister."
"You automatically read 'Z' as 'Zed' and don't give a damn that it doesn't rhyme with "now I know my abcs"."
"Somalia Parliament Votes for Islamic Law - 18 April abcs 20/20 program about Somali pirates gets actors playing as pirates in Slow Motion Video"